43 Trails in Flagstaff, Colorado

Rank Trail Name Difficulty Length (mi) Rating City
1. Heil Valley Ranch Intermediate difficulty 14.0 **** Boulder
2. Valmont Bike Park Intermediate difficulty 6.0 ***** Boulder
3. White Ranch Advanced difficulty 14.0 **** Golden
4. North Table Mountain Intermediate difficulty 10.0 *** Golden
5. Hall Ranch Advanced difficulty 9.0 **** Lyons
6. Betasso Preserve Intermediate difficulty 7.0 **** Boulder
7. Walker Ranch Advanced difficulty 7.0 **** Boulder
8. Golden Gate Canyon State Park Advanced difficulty 35.0 **** Golden
9. Marshall Mesa Area Beginner difficulty 16.0 *** Boulder
10. Picture Rock Trail (Heil Valley Ranch) Intermediate difficulty 11.0 **** Lyons
11. Maryland Mountain Advanced difficulty 12 **** Black Hawk
12. Wapiti Trail (Heil Valley Ranch) Intermediate difficulty 5.0 **** Boulder
13. South Saint Vrain Advanced difficulty 10.0 **** Ward
14. Boulder Valley Ranch Beginner difficulty 7 ** Boulder
15. Dirty Bismarck Easiest difficulty 10.0 *** Superior
16. Standley Lake Beginner difficulty 5.0 *** Westminster
17. Mountain Lion Trail (Golden Gate Canyon State Park) Advanced difficulty 8.0 **** Black Hawk
18. Chapman Drive Intermediate difficulty 3.0 **** Boulder
19. Doudy Draw Trail Beginner difficulty 4.0 *** Eldorado Springs
20. Flatirons Vista Beginner difficulty 4.0 *** Boulder
21. Spring Brook Loop Beginner difficulty 5.0 *** Eldorado Springs
22. Lobo Trail Easiest difficulty 18 *** Longmont to Boulder
23. Ceran Saint Vrain Loop Intermediate difficulty 5.0 *** Jamestown
24. Coal Creek Trail Easiest difficulty 10.0 *** Louisville
25. Marshall Road Open Spaces Beginner difficulty 7.0 *** Superior
26. High Plains Trail Beginner difficulty 4.0 *** Superior
27. White Rocks Trail Beginner difficulty 7.0 *** Lafayette
28. Meyers Homestead Trail (Walker Ranch) Beginner difficulty 5.0 ** Boulder
29. CU Dirt Jumps Beginner difficulty 1.0 *** Boulder
30. Coalton Trail Beginner difficulty 6.0 *** Superior
31. Ponderosa Loop (Heil Valley Ranch) Intermediate difficulty 3.0 *** Boulder
32. Colorado Hills Trail Beginner difficulty 6.0 ** Westminster
33. Community Ditch Easiest difficulty 8.0 *** Eldorado Springs
34. Greenbelt Plateau Beginner difficulty 3.0 *** Superior
35. Rattlesnake Gulch Advanced difficulty 4.0 ** Boulder
36. East Boulder Trail Easiest difficulty 4.0 ** Louisville
37. Bald Mountain Trail Beginner difficulty 1.0 ** Boulder
38. Davidson Mesa difficulty 4.0 * Louisville
39. Bunce School Road To T33 Crash Site difficulty 14.0 Allenspark
40. Van Bibber Park difficulty 6.0 Arvada
41. Bon Scott difficulty 23.0 Boulder
42. St Vrain River Trail difficulty 23.0 Longmont
43. St Vrain River Trail difficulty 23.0 Longmont

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